Oil cleaning and purifying device



l. F. KINGSTON OIL CLEANING-AND PURIfFYING DEVICE Filed Au'g. 19, 1939June 3; 1941.

Patented June 3, 1941 UNITED STATES PATENT OFFICE.

OIL CLEANING AND PURIFYING DEVICE Irwin F. Kingston, Iron, Minn.

Application August 19, 1939, Serial No. 291,078

(Cl. ZIO-134) 2 Claims.

This invention relates to the reclaiming of used motor oils and pertainsparticularly to a mechanisrn or device by means of which such oil mal7be cleansed or reclaimed for further use.

The present invention has for its primary object to provide a novel,preferably portable, oil cleansing or purifying device which is soconstructed that it requires no attention for operation after the oilwhich is to be cleansed or purified is poured into it, the constructionand arrangement of the parts of the device being such that the oil willultimately collect in a cleansed and pure condition in a part of thedevice from which it may be withdrawn as needed for further use.

Another object of the invention is to provide a novel oil cleansing andpurifying device wherein use is made of both upow and downiiow of theoil in the device whereby solid particles will first be extracted orremoved by gravity before the oil passes along the upow path through alter unit and gravitational action will be employed for effecting thepassage of the oil along the downow path through a second filterbattery.

A further object of the invention is to provide a device of thecharacter described which is of relatively simple construction and whichmay, therefore, be easily and economically made and in which the oilstrainers or lters are readily accessible for removalvto be cleaned orrepaired as may be necessary.

The invention will be best understood from a consideration of thefollowing detailed description taken in connection with the accompanyingdrawing forming part of this specification, with the understanding,however, that the invention is not to be confined to any strictconformity with the showing of the drawing but may be changed ormodified so long as such changes or modifications mark no materialdeparture from the salient features of the invention as expressed in theappended claims.

In the drawing:

Fig. 1 is a vertical section through the device embodying the presentinvention.

Fig. 2 is a sectional view on the line 2 2 of Fig. 1.

Referring now more particularly to the drawing, the device embodying thepresent invention consists primarily of a vertically arranged preferablycylindrical body which is indicated generally by the numeral I and whichis formed in two sections 2 and 3 which rest one upon the other, each ofsaid sections in effect forming an individual receptacle or oil chamber.The upper receptacle or section has a bottom wall 4 while the lowersection or receptacle has the bottom wall 5 and when the sections areplaced together one upon the other, the bottom wall 4 of the upperreceptacle forms a closure for the lower receptacle.

The two sections or the two receptacles are tightly secured together,the upper edge of the lower receptacle being provided with a series ofoutwardly turned slotted ears 6 while the lower part of the upperreceptacle 2 has pivotally attached thereto a series of bolts 'I whichare designed to swing downwardly into the slotted ears S and to receivewing nuts 8 so as to lock the two sections of the device together.

The upper section or receptacle 2 has disposed vertically therein theoil receiving cylinder 9, the lower end of which rests upon the bottom 4while the upper end extends through the open top of the upper sectionand a substantial distance above the same as shown. The lower end of'the cylinder 9 is provided with discharge ports Ill.

A closure of `any suitable type is placed over the top of the section 2as indicated at II, having a central opening through which the oilreceiving cylinder projects and there is secured to the upper part ofthe section 2 a handle or bail I2 by means of which the transporting ofthe purifying device is facilitated.

Disposed horizontally in the central part of the upper section 2 are oilstraining units which comprise spaced apertured plates or separators I3between which is held a strainer material which is preferably formed ofburlap and eX- celsior, indicated by the numeral I4, and the separatorsI3 are in the form of annular steel plates through the centers of whichthe oil cylinder 9 extends, and these plates are provided with a seriesof small apertures I5 through which the oil may pass.

The lower receptacle 3 is likewise provided with oil strainer units butthese units are made up of the spaced metal disks I6 between which arepacked burlap and excelsior filtering material, as indicated at Il, thedisks IE being provided throughout with small apertures through whichthe oil may pass downwardly.

Extending from the upper receptacle 2 above the strainer or filterunits, is a pipe I8 which leads downwardly exteriorly of the purifyingdevice and passes into the upper part of the lower section 3 above theltering units therein, this pipe having the portion lying Within thesection 3 provided with a plurality of oil discharge apertures IS.

The lower part of the upper receptacle is provided with a drain cock 20and the lower part of the lower receptacle is provided with a similardrain cock 2| through which the purified oil may be drawn off Yfrombeneath the lower receptacle filtering units.

In the use of the present oil purifier, the oil which is to be reclaimedor purified is poured into the upper endof the receiving cylinder 55 anddischarges into the lower part of the upper receptacle 2 through theopenings lll beneath the upper receptacle iiltering units.A As the upperreceptacle is filled, the oil will force its way upwardly through thefiltering units therein and will escape from the upper receptacle intothe pipe l and iiow into the upper part ofthe -lower receptacle, beingdischarged through the pipe apertures i9 onto the top of the filteringunits in the lower receptacle. .From here it 4willilow bygravity throughthe filtering units into the hottompart of the lower receptacle where itwill bezin cleaned and puriiied condition ready for further use. It willbe apparent that in the upper receptaclerthewater .and gasoline willsettle rom the oil as well as any other foreign matter of a Vsolidnature and such waste or impurities may be dra-wn throughithe `dischargecock 223. The partly puried oilwill then be further puriiied .by itsvpassage Ythrough the upper and lower the Aplates i may be easilyremoved for cleaning'or replacement. ,It `is preferred that thesestrainers be made up of alternate layers ofburlap and Vexcelsior asshown in the gure, stitched or sewn together in-a suitable manner sothat they may be -readilyplaced in position between the perforatedplates.

By forming the end portion of the pipe l Vvwhich lies within the lowerreceptacle 3, with its inner-end closed and with apertures through thewall thereof, it will be readily apparentthat the oil as it isdischarged into the lower receptacle will be. distributed over-'theiiltering unit.

What is claimed is:

l. -An -oil purifier, comprising a pair of receptacles each having abottom and side wall, one of said receptacles being disposed upon theother whereby the bottom wall of the upper receptacle forms a closingtop wall for the lower receptacle, a vertically disposed cylinder in theupper receptacle supported upon the bottom Wall thereof and having anoutlet aperture at its lower end, the upper end of the cylinder beingopened for the reception of oil, a horizontally disposed filtering unitvencircling said cylinder above said outlet aperture and dividing theupper receptacle into upper and lower oil receiving spaces, the bottomoutlet of said cylinder opening into the lower one of the spaces, altering .Unit horizontally dividing the lower receptacle anddividing thesame into upper and lower oil receiving spaces, a pipe leading from theupper oil receiving space of the upper receptacle at the plane of thetop of the filter unit therein to and discharging in the upper oilreceiving space of the lower receptacle :whereby eil flowing therefromwill Abe .discharged on'the filterI of" the lower receptacle, ^and meansfor drawing oil `oii from the lower oil-receiving space ofv the lowerreceptacle.

2. An oil puriiier, comprising a pair'of receptacles` eachV having`arbottorn and side wall,v one of said. receptacles `being disposed uponthe other whereby thegbottom' w-all of the upper receptacle forms aclosing top wall for `the lowerreceptacle,

Y the -top of the side wall of the lower receptacle being-formed toprovide a'seat for thered-ge of the bottom of the top receptacleavertically-disposed cylinderiin the upper receptacle supported upon thebottom wall thereof and having Van outlet aperture atv its lower end,theupper end of the cylinder being opened for the/reception of oil, ahorizontall-ydisposed-lltering unit encirclingsaid cylinder and dividingthe upper receptacle. intoupperfand lower oil receiving spaces, thebottornroutlet ofV said cylinder opening into the-lower oneV ofthespaces, a filtering unit hori zontallydividing the lower receptacle .anddividing the same into upper andloWer-oilreceiving spaces, a pipeleading fromv the upper oilreceiving .space of-the upper receptaclesubstantially inthe plane of the top of the upper lter unit to vtheupper-oil `receiving :space of the Vlower receptacle, an aperturedpipesecured` at one end vin the wallof the llowerlreceptacle andihavingcommunication with the rst pipe and discharging oil over the filter ofthe lower receptacle, and means forV draining the contents-ofthe loweroil receiving space of each-receptacle.

IRWIN F. KINGSTON.

